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zetec turbo valve springs

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Old 27-09-2013, 01:08 AM
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mk1trb
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Default zetec turbo valve springs
Anyone know the boost limit for piper valve springs in a zetec turbo?
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Old 27-09-2013, 09:37 AM
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They're not great with big boost, I know that. I could probably find out as I know someone that had a set of Piper springs and replaced them with Devil Developments springs.
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Old 27-09-2013, 10:07 AM
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would they take 1.5bar?
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Old 27-09-2013, 05:14 PM
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Apparently not, he had problems with them at 1.3 bar.
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Old 27-09-2013, 05:27 PM
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bar it is for now then. thanks fella
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Old 27-09-2013, 06:03 PM
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Could run shims to help but if your going through the hassle of taking it apart then just fit devils springs
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